Coal jig



Patented ct. 25, 1927.

1,646,422 PATENT orifice.

WILLIAM zA. REILLY, -OF WYOMING, PENNSYLVANIA.

` COAL ne. y

Application ined April 29,1924, Yserial Nb. 709,733.

My invention relates to coal .jigs and similar apparatus employed for the washing and separation of coal7 ore andthe like from foreign matter which it is desired to eliminate. y

The general object of'the invention is to provide a novel construction of apparatus comprising means whereby the finer or smaller sizes of coal are prevented from becoming iiitermingled with the slate inthe tank and thereby lost. n

A further object of the invent-ion is -to provide -an apparatus'of the character .indi cated comprising means .whe-reby'y a more complete and efficient separation of the coalv from the slate and lother, foreign matter of greater specific gravitytlian the coal may be effected.

A further and more specific object of the invention is to provide means whereby theA coal from the jig pan is adapted ito be delivered into the tank so that a portion thereof, particularly the finer grades or sizes, settle in the bottom or boot of the tank where they-may be removed by theusual endless 'conve-yer, while the slate is delivered into a receptacle the bottom7 sides and lower end of which are closed aiid'from which the said slate is removed without being allowed to enter the tank as heretofore has been ther practice. l

` To these and otherends the invention compreheiids the novel construction and arrangement of parts as hereinafter described, particularly pointed out in the claimsv and as illustrated in the accompanying drawing in which` I have illustrated one convenient form of mechanical embodiment of the saidv invention.. r However, it will beV understoodthat the invention is susceptible of embodiment in otherfoims of construction than that shown and that changesin the details of construction maybe Vmade within the scope of the 7, claims without departing from the said invention.

In the drawing Fig. l is a longitudinal vertical sectional view of a coal 'embodying the invention;

supported thereby isa tank 2 of usual construction. The froiitand rear walls of the said tank are convergent so that any material discharged thereinto is concentrated at the lower end thereof in a boot or pocket 6o 2fL open .at its lower end as shown, which opening is adapted to be closed by a slidabley ydoor* or valve 3 which is ladapted-to be actuated by the rod 4 and pivoted 'handle 5. Mounted within the Ltank 2 isa jig pan 10 the opposite sides'of which are secured to bars 11 the lower ends of which are reduced and entendy through openings in horizontal flanges upon brackets 12. The upper ends of the bars 11 are mounted upon eccentrics 15 upon a shaft 16 which is adaptedV to be rotated by a driving band (not shown) which .engages the wheel pulleys 17 one of which is fast and the other loose thereon. VThe opposite end of the shaft 16 is provided with afdrive wheel l8which'is engaged by a drive belt 2O which belt also engages a wheel21 upon a shaft`22 provided with drums or pulleys 25 (one only of which is shown) by means of which the coal and slate conveyers 27 and 28 are driven. The low-er ends 'of the said conveyers 27 and 28 engage and travel over drums or pulleys 29 and 30, the latter being indicated in dotted lines in Fig. 1 of the drawing. i l

lhe conveyer 27 is located'in a run-way of rectangular shape in cross-section formed by a portion of the bottom ofthe tank-2, a side thereof and the partition plate 27a. The lower' end of the said run-way is op'en and the lower end of the said conveyer eX- tends into the tank and terminates within the pocket 2a at a point directly above the opening therein which is closed by the slidable'door or valve `3. The slate conveyer 28 isv mounted in an upwardly and rearwardly inclinedV run-way or pocket formed by a portion of the bottom of the tank 27 the adjacent side of the tank, the partition 27a previously referred to, and the closure for the lower end thereof. The mixture of coal and slate is discharged as shown from a chute` into the front end portion of the vpan 10 the bottom of which is perforated as shown. The said jig pan is provided with an adjustable baffle plate 36 under the lower edge of which the mixture of coal, slate and other impurities is caused to pass. Asalreadyindicated,

eccentrics l previously referred to and the iiiotion is such that the inixture ofcoal and slate is caused to move slowly forward toward the rear or discharge end of the pan.

The coal is of less speciiic gravity than the slate and other. impurities which inaywbe present, in consequence of which certain of the coal, iininediately after it has passed beh vond the baille plate rises upwardly within the body of water within the panlO, and in order that such coal inay not have to tra-vel forward to the discharge chute et() at the rear end of the tank l have provided ineans whereby it inay bedischarged i'roin points intermediatethe opposite ends of the opposite sides of the pan li). ln order that the forward inoveinent of the coal which separates freni theslate immediately after the niiiiture of coal and slate has i passed underneath the baille plate ,n'iay be interrupted and caused to be discharged laterally frein the'jigpan I have provided an angle plate having one'of its flanges il arranged ina substantially horizontal plane and'extended toward the front end of the y jig pan. The opposite flange a2 of the said angle plate extends 'in a vertical direction t and theopposite ends of the said angle plate are secured in or adjacent rectangular notches or slots l5 forrned inthe opposite sides of the jig'pan. The depth of the water in the pan is such that a considerable portion of' the angle plate is suln'nere'ed therein. The horizontal flange il of said plate occupies a position a substantial distanceibelow the top of the `waten in the saidV jig pan.` rlhe result of this arrangement 'is As the mixtuieof coa.l,` slate and other` ini-` purities ofrgi'eater speciiic gravity than the coal nieves forward a further separation takes placeandthe coal,` which is oflcss specific giavitythan the foreign inaterial,

including the slate, rises to the top and discharged through the chute LlO'ontotlie conveyor 27 which is ti'i'iveling iii the direction Aindicated by the arrow in Fig. l of the drawing. Such of the coal `as does not fall through the conveyer downwardly onto the bottom of the trough or run-way within -which the conveyer is situated is carried downwardly to the bottoni of the tank 2 and is interiningled with the coal which is discharged through the notches or openings with adjustable weights` 6l.

as previously described. An angular baille plate is provided for preventing any of the coal from entering the slate discharge trough or receptacle previously referred to.

Y. The slate `and other impurities of greater vspecific gravity than the coal are discharged vunderneath the lower edge of the breast plate 55.V The discharge of the slate and other foreign mattei' of greater specific gravity than the coal is controlled by a doorG which is hinged at 57 tothe relatively stationary forward edge of the bottoni of the j ig pan l0. The said door is perforated and constitutes in effect a continuation of the bottoni of the said pan. The said door is adapted to contact with the lowercdge of the breast plate along a line near its outer lower-edge and isV adapted to be held in contactual relation with respect to the lower edge of the said baille plate by rods 58 the lower endsuof which are connected to lugs or ears upon the rear edge of thesaid door or alve, while the upper ends thereof are `connected with the rear ends of levers 53S) Vwhich are pivoted intermediate' their ends upon the 'upper ends of posts 60 which are secured at their lower ends to `the opposite sides of the jig pan l0. `The forwardly extending ends `of the levers 59 are provided Situated above the `conveyer Q7 `and the ruirway 'or trough within which it is situated aiid underneath a portion'ofithe pivoted door or valve 56 is a cross-wise'extending plate which is inclined toward .the conveyer 2S and the trough or receptacle within i which it is situated so as todeliver the portion of the slate which is discharged above the conveyer Q7 onto the conveyor 28. i As a `further means of preventing theslate froin esca-ping into thetank 2 and interiningling Vwith the `coal therein I have provided the perforated inclined baille plate67 which eirtends upwardly and'iforwardly froiii the upper edge of the closure `32 and from the front edge of the plate G5.

`It will be seen that by iny provided a coal` jig in 'j which the coal is adapted to be'discliarged from the jig pan into the tank within which the jig pan is loinvention I have cated and that in consequence thereof all of the grades or sizesof theL coal, `including vthe very finest which may be present,l are concentrated in thereducedbottoiii portion of the tank troni which they are reinoved by the conveyer provided for that purpose.

kThe slate and other impurities of greater specific gravity than thecoal are, contrary to `the usualV practice, delivered Y into a trough orchute from which 'theylare removed by a conveye-r` andare not permitted to enter the tank. t y J It will also be noted thatgthefeiliciency of the jig' is `increased by providing means `whereby certain of the coal vwhich is iirst separated 'from the slate and other impurities of greater specific gravity than the coal may be removed from the jig pan without the. necessity of being moved or carried forward to the rear discharge end of the said pan. y

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

l. In a coal jig, the combination of a tank, a vibratable pan supported within the said tank, the opposite sides lof said jig pan being provided with openings at their upper edges intermediate their opposite ends, an angular plate having its opposite ends mounted within said openings, a, portionr of the said plate occupying a substantially horizontal plane and vextending toward the front of the said jig pan and another portion thereof extending upwardly in a substantially vertical direction, the horizontal portion of the said plate being adapted to be submerged within the water in the said4 pan whereby the Vsaid plate is adapted to interrupt the rearward movement of coal which separates from the slate in the front part of the said jig pan, and the said jig pan being provided with coal and slate discharge means at its rear end, the coal being adapted to be discharged into the sai-d tank, a receptacle into which the said slate is to be discharged, and conveyers for removing the said coal andslate from the coal jig, vsubstantially as described.

2, In a coal jig, the combination of' a tank adapted to hold water, a vvibratable jig pan mounted within said tank and partially y submerged by the said water, means for delivering a mixture of coal and slate to the said jig pan, whichjig pan is provided'at f the upper edge of its rear end with coal discharge means and at the lower edge of its rear end with slate discharge means,a conveyer for removing the coal from the said tank, said conveyer` extending to a point adjacent the bottom of the said tank, a con- Y veyer for conveying'the slate from the said jig pan, a receptacle within which the said last mentioned conveyer is situated, a transversely extending chute'situated yover the coal conveyer and receiving a portion of the slate which is discharged from the said jig pan and conveying it into the said receptacle, the remaindery of the said slate which is discharged froni thesaid jig pan being delivered directly into the said receptacle, and

the. lower end of the said receptacle beingk WILLIAM A. REILLY, 

